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(Model.) l 2 sheets-sheet 1.

G.. B. SMITH. SASH BALANCE.

n No. 289,458.` Patented Deo. 4, 1883.

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G. B. SMITH.`

SASH BALANCE.

Patented Dec. 4,1883..

v In/mtor:

UNITE i STATESKV PATENT OFFICE.

GARY B. SMITH, OF DEN-VER, COLORADO, ASSIGNOR TO ROBERT E. PERRY,

' OF SAME PLACE.

SASHBALANCE.

SPECIFICATION forming part of Letters Patent No. 289,458, dated December 4, 1883.

` Application filed June 19, 1883. (Model.)

the same.

My invention relates to improvements in combined sash-holders, fasteners, and weights and the object is to provide simple, reliable,

and durable mechanical means operating in unison to attain the ends of my invention-to wit: rst, to fasten the sash securely when the meeting-rails are together; second, to hold one or both sash in any desiredposition of elevation or descent; and, third, to provide aweight or balance of peculiar `construction adapted to sustain the sash in any desired position.

My invention therefore consists in the novel construction and combination of parts, as will be hereinafter more fully described, and specifically pointedout in the claims.

In the accompanying drawings, forming a part of this specification, Figure l is a front view, partially in section, showing` my improvements applied to a window sash and frame. Fig. 2 is aside view, showing the pinions Xed in the frame and the rack-plate in detail. Fig. 3 is a transverse sectional view of the weights with the key applied. Fig. 4 is a view of the key, and Fig. 5 is a detail view of the several parts relatively arranged.

The letter A represents a window frame and sashes of the usual construction, except as modified by having my improvement applied, and as will be hereinafter mentioned or pointed out in the course of the description. Inthe outer faces or sides next to the frame in the upright or in both uprights of the sashes are formed grooves, (not shown,) extending the whole length of the sides, for the purpose about to be mentioned.

The letter B represents a rack-plate suited to the thickness of the sash, and secured to the outer face of therespectve uprights over 5o the grooves heretofore mentioned, for the purthe art to which it appertains to make and use pose of serving as a rack bar or plate for the teeth of the pinions. This rack-plate has the last three or four racks cut out to oneside at a, in order that the sash may be withdrawn from the frame and again inserted.

The letter C represents a pinion journaled in the casing c, which is let into the upright bof the frame, and so adjusted or arranged that they shall engage with the racks on the sash in their whole length, or so that the sash may be raised to the full height or lowered, as may be desired. The relative adjustment of the pinions to the upper and lower sash is seen in Fig. 2 of the drawings.

The letter D represents the weight, formed 6 5 with a central row of rack-teeth, c, forming slots for the key, and also is formed with intermediate perforations, d, forming a rack-bar for the teeth of the pinions. The teeth of this weight are preferably made angular, with douf ble inclines in the direction of the edges, in order that the key may be inserted at any point. On each end of the weights are formed side flanges or lugs, e, which extend far enough to ll up the space betweenthe upright Zi and the side of the frame. These also afford passageways for the pinions when it is desired to take either sash out. The ilanges serve to preserve theperpendicularity of the weights, and at the same time tend to obviate noise or rattle in the movements by preserving the engagement of the pinions with the rack in a straight line.

The letter E represents thekey, which consists of a straight piece of metal with the shank f and cut-away portion g. The shank passes through the casing, and allows the key to be pulled out and pushed in for a prescribed distance. This key passes through between the teeth of both weights of the sashes and holds them in any position,locking them firmly and securely therein, andthe cutaway part of the key is so arranged that in withdrawing the key the cut-away part shall straddle the teeth on the weight of the lower sash, and the end shall be free from the weight of the upper sash, and thus allow the free movement of one or both. It is seen that the weight consists of casting in gearfrack form corresponding in length with the sash, and with the racks on the sash, or nearly so. The recesses may be 10o of any desirable shape, but so that the gear and recesses shall correspond. The sashes may loe removed by taking off the cleat and then raising the lower or lowering the upper one until the open racks of the plates reach the pinions, when the sash may be withdrawn.

These' appliances may be on both sides of the frame 5 but applied to one side is generally sufficient, and perhaps preferable.

I am aware that sash-balances have heretol l. A sash carrying a rack-plate on its edge next the frame, in combination with a pinion engaging the said rack-plate, and a loose balance-weight formed with a central rack adapted to engage with the pinion, and also formed with a series of lugs or-teeth on the reverse side, substantially as and for the purpose set forth.

2. A sash carrying a rack-plate on the edge next the frame, a pinion and a loose balanceweightformed with a central rack, and a plurality of lugs or teeth on the reverse side, in

combination with a key interposed transversely between thelugs or teeth on the weight, substantially as and for the purpose set forth.

In testimony whereof I aiX my signature in presence of two witnesses.

GARY R. SMITH.

Vitnesses:

MIRA R. SPRGUR, lt. E. PERRY. 

